2020 Bett1Hulks Indoors – Singles

First seed Alexander Zverev won the tournament, defeating third seed Félix Auger-Aliassime 6–3, 6–3 in the final. This was the first edition of the tournament, primarily organised due to the cancellation of many tournaments in 2020, due to the COVID-19 pandemic.

Seeds
The top four seeds received a bye into the second round. • # 🇩🇪 Alexander Zverev (champion)

• # 🇪🇸 Roberto Bautista Agut (semifinals)

• # 🇨🇦 Félix Auger-Aliassime (final)

• # 🇫🇷 Benoît Paire (second round)

• # 🇷🇸 Filip Krajinović (first round)

• # 🇵🇱 Hubert Hurkacz (quarterfinals)

• # 🇩🇪 Jan-Lennard Struff (first round)

• # Marin Čilić (second round)

Seeds
• # 🇩🇪 Dominik Koepfer (first round)

• # Lloyd Harris (qualified)

• # 🇫🇮 Emil Ruusuvuori (qualified)

• # 🇯🇵 Yūichi Sugita (first round)

• # 🇯🇵 Yasutaka Uchiyama (first round)

• # 🇺🇸 Marcos Giron (qualifying competition, lucky loser)

• # 🇫🇷 Grégoire Barrère (first round)

• # 🇦🇺 Marc Polmans (qualifying competition, lucky loser)

Qualifiers
• # 🇩🇪 Oscar Otte

• # Lloyd Harris

• # 🇫🇮 Emil Ruusuvuori

• # Henri Laaksonen

Lucky losers
• # 🇦🇺 Marc Polmans

• # 🇺🇸 Marcos Giron